Scarifier.



D. B. COOK,

SCARIFIER.

APPLICATION FILED Aue.29.1912.

Patented Apr. 6, 1915.

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D. B. COOK.

SCARIFIER.

APPLICATION FILED AUG.29, I912. 1,134,945, Patented Apr. 6, 1915.

5 SHEETSSHEET 2.

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a To a 4 m D. B. COOK.

SCARIFIER.

APPLICATION FILED AUG.Z9, 9]2. 1,134,945. Patented Apr. 6, 1915.

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N 31100 1h 1 xQaudfiw Horne D. B.'CO0K.

SCARIHER. APPLICATION FILED AUG.29, 1912.

1,134,945. Patented Apr. 6, 1915.

5 SHEETS-SHEET 4.

D. B. COOK.

SCARIFIER.

APPLlCAHON HLED AUG.29. 19:2.

Patented Apr. 6, 1915.

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Dev-mas. coca, or mmmw ms, mes mn .GOHBAN'Y, OI IMN 1303B, NEW 1633,. 1. 03' NEW 2033.

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1,134,945. Sn fifi or nmsrem Patented 6,1915.

. aemia fled agave-ac, 1m. sane-m. $37,390:

To all when it? may aemams tnd'nmlby substantially eqxrat distances apart Be it known that I, Dsvm B. Cont, Frankfort, in the county of Herkimer', far the State of New York, have invented new and useful Improvementsv in Scari'fiers, oil which the following, taken in connectionwith the accompanying drawings, is a fiull, clear, and exact description.

This invention relates to certain improvements in scarifiers adapted to he used more particularly in tearing up and loomning road beds or pavements preparatory to l trenching, excavating, grading'andresurfacing and similar operations which may be necessary in road building or' trenching for water pipes, sewers and other conduits which it may be desired toplace under the road.

bed. In most instances these reed beds are extremely hard and are difficult to penetrate and, under the method commonly used of plowing, the work is not only unusually expensive and laborious, but requires considerable power, and results infrequent breakages of the apparatus employed and renders the use of mechanical motive power (which is preferable) impractical. Furthermore, it is frequently necessary to use apparatus or this character upon narrow road beds or highways where it is impossible; or at least inconvenient, to turn the entire :1 jparatus around for operation in reverse directions along such road bed.

The main object, therefore, of my present invention is to render' this s'carifying opera)- tion more efiicient and less' laborious than: hasheretofore been practised and, at the same time, topermit the machine to be drawn or propelled from either end with a minimum degreeof motivepowers- Inether words, I have sought to mount-the scant-y ing implement upon the" undersideof !r tourwheel truck in such manner. that it may-Iboreversed end for end according to thedirec tion of movement of the without turn ing the latter around: and, at the same time, to enable the truck to be propelled from: either end by a traction engine or otherxhotive power.

Another object is to provide tlie-s'carifien with forwardly converging rows of teeth disposed at an acute angle to each other, the teeth of opposite rowe being'spucedl Icngi' ing impiement mg the load. or resistance eflered' by the entrance elf the teeth: into-the sand bed and, at v the sametime, caasi'egthe machine to travel more easily along the separate: line: of draft wgh less liability of: to right or it further object is 110- provide simple means for raising and lowering" the scarifyto gage the depthof out according to the nature of the ground and also-topermit thetooth-s'upporting frame to be raised clear: of the groundwhen necessary in tnansporting the machine from one locality to mother.

I A; still further object is to counterbalance the scsrifying implement or tooth-supporting frame upon a suitable swivel disposed in such manner that thesaid tooth-supporting 1 frame may be easily and quickly reversed end forend er'tiljted vertically in any direction to' di flerent angles to and: from a horizental plane: 7 so Other, objects and uses relating to specific parts of the machine will be brought out in the following description. 7

In the drawingsFigur-es I and 2 are-re specti vely' atcp plhn and side elevation of a read scarifier embodying the various featuresof'my inventi om Fig. 3"is an enlarged longitudinal vertical sectional view of the greater portion of one .end of the machine taken on: line 3-3, Fig. 1. Fig. 4 is a persp'ecln've view of the detached scarifying impie'mentor'tooth supporting frame shown in Figs. 1, 2, and 3' except that the counter weight is removed. Figs. 5 and 6- are enlarged transverse vertical sectional views of the same machinetaken respectively on lines 5i-5 and 6 -6, Fig. 1 Figs.-7 and 8" are on larged' detail sectional views of portions of the scariiying' implement taken respectively onlines7-7 and 8-8, Fig. 2. Fig. 9 is an enlarged; detail vertical sectional view' through one ofi'the axles and adjacent p'or- I tions or the superstructure showin more particularly themem s finlncking e safe against turning. Fig. is a transverse vertical sectional view through one side of the scarifier frame showing more particularly the guard rails and fastening means there-- for.

'As illustrated,' this machine comprises a four wheel truck 1- and a scarifying implement --2, flexibly and reversibly mounted thereon, together with suitable means for raising, lowering and tilting the scarifying implement as may be desired in gaging the .depth of cut or in clearing the teeth from the surface of the ground when transporting the machine from one place to another. 7

The truck 1- preferably consists of an elongated rectangular frame -3 of considerably greaterlength than that of the scarifying implement '2 and adapted to be supported at its ends in the manner hereinafter described upon suitable axles 4- and 4'-, each of the latter being provided with a pair of wheels 5- and 5'--.

The main supporting frame 3- of the truck preferably consists of a pair of I-beams 6 running parallel to each other lengthwise-of the machine and spaced a suitable distance apart transversely at the inner sides of the adjacent wheels 4- and 4:', the opposite ends of said beams being conneeted or tied'together by transverse chan-' nel-bars 7 and '---7' together with suitable filling blocks --8- which are interposed between the ends of the channel bars and under sides of the the I-beams.

The channel bars 7' and 7- form-.

ing parts of the main supporting frame are disposed directly above. and some distance from their respective axles 4--an d horizontally and parallel therewith; The.

central portions of the bars 7-'an'd-il I and corresponding axles -4 and are connected to each' other by telescopin sections 10- are suitably secured 'to' the undersides of the respective channel bars 7'- and -.-7-, the -conection between each fifth wheel section 9- and its com-' panion 10-- permitting the corresponding axles to turn easily in either direction in a horizontal plane for steering purposes while the king bolt 11- serves tov hold the .corresponding fifth wheel sections in operative engagement and also facilitates the turning action of the axles referred to. It is now apparent that the wheels and axle at either end ofthe machine may be used for steering purposes. and that the machine may he,

therefore, drawn or propelled from either.

end without turning the machine around when operating/1n narrow or cramped adjacent portions of fbolts fifth wheel'sections and -.-10."- king bolts 11--, the sections being-=1 secured by suitable fastening means to their: respective axles -4 and 4'-' wl'iilej'thef places. It is preferred, however, to lock the I axle at one end of the machine against tuming when the motive power is' attachedto the op osite end and for this purpose one end 0 each of the cross-bars 7 is extended a short distancebeyond the adjacent I-beams and is provided with a pair of apertures --12' for receiving a U-shape locking bolt -13 which is also passed through vertically alined apertures in an underlying plate14. and engaged with the front and rear faces of the adjacent portion 1 of the axle thereby firmly locking said axle against turning in either direction and permitting the same bolt to be used for locking either axle. I

' The'plates 14 extend lengthwise of r the machine and in addition to their function for receiving the lower end of the locking bolt -13-, serve as additional support.- ing guldes along which the adjacent ends of the axles are adapted to. turn, said plates I-heams as shown more clearly in Fig. 9. i

- being secured by brackets .'15 to the underside of the overlying portions of the Suitable clip plates +16- are secured by bolts 17-'-' to the underside of the central portions of the axles 4- and 4" and also to the superposed fifth wheel sectionsv 9 forstrengthening the axles at these points, said axles being additionally braced against forward and rearward movement by by bolts'-19- to the underside of the clip plates -16- co-axially with the adjacent king bolts -11+- and their opposite ends are secured to the central portions of cross bar's "0- connecting-the I-beams 6- eme id stanceto the inner sides of the cross 7 and 7' as shown more clearly 5.71, 2, and 3."

table'drawheads or draft appliances V to. their respective axle sections, and 4=' and their outer or ginejlor other motive power. "The scarifying implement or tooth-supportlng frame --2, which is flexibly and .reversibly mounted upon the underside of the main supporting frame -1- between the frontand rear sets of wheels, comprises a triangular frame--23 ofsuitable length capable of being turned end for end be- '-braces'18 which are secured at one end; a

re hinged or pivoted at one end by a tween the wheels about a vertical axes and v I composed of opposite side bars or I-beams .24--- 'of' 'uniform length arranged at an 110 opposite ends are adapted to receive a pole, link "or other connection with a traction ena to a hanger-l8-- on the underside of a super-posed supporting bar -49-. This bar &9 extends transversely across the upper I side of the scarifier frame 23- directly over the cross-bar and its opposite ends are flexibly connected by links to separate superposed ,levers 51. which are pivotally mounted in suitable bearings upon the main supporting frame -l-- and are provided with toothed segments -52 meshing with superposed worms -53--. These worms --.53- are secured to separate rotary shafts 54 which are journaled in suitable bearings upon the main supporting frame 1 in transverse co-axial alinement with each other some distance to 'opposite sides of the longitudinal center of the machine and are provided at their inner ends with separate hand wheels -55 by which the worms 53 may be rotated torock the levers 51- upon their fulcrums -56 as shown more clearly in Fig. 5 for raising and lowering either or both sides of the scarifying implement. The bearings for the levers 51- and worm shafts -5 lare mount'ed on upright standards consisting oi -angleirons -57 which are secured toopposite sides of the I-beams 6- of the main supporting frame.

The supporting arms I end of the scarifier frame are pivotally connected to suitable levers 60 which are fulcrumed at 61- in suitable bearings upon the main supporting frame and areprovided with tooth segments --62- meshing with separate worms -63- the latter being secured to co-axial longitudinally ex-' tending shafts 6al-having hand wheels -65- by which the worms may be turned separately to operate the levers 60- and thereby raise or lower the front end of the scarifier frame through the medium of the supporting arm 3l which may be con-' nectcd thereto. The bearings for the shafts 64 and 61 are mounted upon upright standards or angle-irons (56 which are secured to cross-bars '67--- forming,

together with the upright standards 66,

parts of tn main supporting frame -3.

The arms 3l and cooperating levers -60are adjustable relatively to each other -31- for the front- .-70at different distances f m their ful: crum for receiving bolts'71 by which the arms 50 are pivotally connected to said levers.

As previously intimated 55, by which the sides of the scarifier are raised and lowered separately fromeach other, are spaced a suflicient distance apart to permit the operator to pass readilybetween them, along and upon a suitable platform 73- preferably-0f woven wire held in place against the under sideof the beams 6 by underlying transverse bars -74-'- which are bolted to the lower flanges of said the hand wheels beams, said platform extending lengthwise of the main supporting frame between the standards 66 so as to permit the opera tor to pass from one to the other of the hand wheels --65 for controlling the adjustment of the front end of the scarifier according 1 to the direction of movement of the machine.

Th links or arms 31 for supporting the front end of the scarifier are guided in their vertical adjustment between suitable brace bars 76- having their front ends secured to the brackets 15 and their rear ends provided with guide-bolts 78- for engaging the front and rear edges ofsaid 7 links as shown more clearly in Fig. 3. The 'jadjustmg devices for the front end of this scarifier including the hand wheels -65- arelo'cated equidistant from and longitudinally at opposite sides of the adjusting device for the sides of the scarifier and approximately in the plane of the longitudinal center of the machine so that the operator may readily walk along the platform from one adjusting wheel to the other Without:

leaving the machine' The upper and lower flanges of the scari= fier bars 24 are reinforced by lengthwise steel plates -80 riveted or otherwise secured thereto and are recessed in one side to correspond to the recesses 37 for receiving the. teeth -34' and additionally brac ing them against relative movement longitudinal of the frame.

The lower ends of each of the supporting members -31 for the scarifier are 'connected by links 82 and -chains-83- to the adjacent draw heads 21 a'sshown more clearly in Fig. 1 to be used as a supplemental draft device if necessarym The nut 47- on the pivotal bolt 4=6 rests upon the upper surface of the hanger* v f8 and together with the bolt forms the: main support for the scarifier about which-3 the latter is adapted to turn end for endto by the link -'31.-, and its the lever 60.

- amp;

Operation! erating'this scarifying implement, the axe, which is tube connected to the motive power through the medium of the draw-bar'21, is unlocked for steering purposeswhile the axle at the opposite end of the machine will be locked against turning by means of the locking bolt -13, under which conditions, the scarifier or tooth-supporting frame will be adjusted rotarily about the'axis of its pivotal bolt -46 so as to cause its a ex to face the direction of propulsion o the machine whereupon the front end or apex of the scarifier is locked by the pivotal bolt -30 to the lower end of the link 31 which is already connected to the adjacent lever Now, assuming that the scarifier has been raised during the transportation of the machine to the locality where it is desired to tear up or loosen the road bed whereupon the scarifier may be lowered by manipulation of the adjusting wheels -55- and until the teeth are caused to enter the proper distance into the ground so that, as the machine is propelled along the road, the master tooth 34- will initially cut and loosen the pavement in a more or less direct line and it will be followed successively by the remaining teeth in parallel lines a suitable distance apart according to the degree of divergence of the side bars 24- or proximity of the teeth longitudinally relatively to each other and it is evident that when the initial cut is made, by the master tooth 34-, the ground at either side thereof will be more easily loosened by the remaining teeth so that the scarified area will gradually increase in width to equal the distance between the rear teeth which is approximately equal to the width of the machine between the wheels. After completing this operation in one direction along the road bed, if it is desired to return over adjacent ground, it is simply necessary to detach the motive power, reattach it to the opposite end of the machine, remove the locking pin from the previously locked axle and place it in operative engagement with the previously unlocked axle and finally withdraw the bolt 30- from connection withthe adjacent arm 31 and then swing the entire scarifier horizontally about the axis of the pivotal bolt 46 end for end and interlock its apex with the other arm -31-- by means of the same bolt -3 0 whereupon the machine is ready for a repetition of the operation previously described but in the reverse direction. If, during eitherof these operations, it is desired to adjust the front teeth farther into'the ground than the rear teeth, this may be accomplished b proper manipulation of the wheel -65 t rough the medium of the worm -63- and rack -62- of the lever60-- together with the connecting link 31 which is attached to the front end of the scarifier. On the other hand, if it is desired to cut deeper on one side than upon the opposite side of the part of the road bed being operated upon, the side requiring the deepest out may belowered by proper manipulation of the adjacent controlling wheel 55-. In this manner, the scarifier may be raised and lowered bodily or tilted in any direction relatively to a horizontal plane, it being understood" that the connections between the scarifier and the several adjusting devices are sufiiciently flexible to permit such tilting adjustment without unduly straining any of the parts.

What I claim is:

1. A road scarifier comprising a wheel truck, having a scarifying implement rotatably mounted thereon for horizontal swinging adjustment end for end and'means independent of the means by which the scarifying implement is mounted upon the trucks for holding said implement in its adjusted positions. a

2. A road scarifier comprising a wheel truck, a bar running transversely under the truck. a frame swivel connected to the bar to rock horizontally and vertically, separate devices connected to the frame at opposite sides of the swivel for'tilting said bar and thereby the frame vertically, separate'rows of teeth secured to the sides of the frame some distance apart, and an additional device connected to the apex of the frame for rocking said frame vertically independently of the first named device. 3. A road scarifier comprising a wheel truck, a frame pivotally mounted on the truck for horizontal rotary adjustment. supporting members for the apex of the frame located at opposite ends of the truck a distance from' the pivot of the frame corresponding to the distance between said pivot and apex of said frame, and separate devices on opposite ends of the truck for raising and lowering said supporting members and thereby rocking'the frame which may be attached to said members vertically.

4. A road scarifier comprising a wheeled truck, a frame mounted on the truck for horizontal rotary adjustment, supporting members for the front of the frame at opposite sides of its axis of movement, and means for raising and lowering said supporting members and thereby vertically rocking the frame. a

5. A road scarifier comprising a wheel truck, a bar running transversely under the truck, a frame swivelly connected to the bar, separate devices connected to the bar at opposite sides of'the swivel for tilting the bar and thereby the frame vertically, teeth secured to the frame and an additional device connected to the forward end of the end of the frame for rocln'ng said frame I frame for rocking said frame vertically. vertically.

6. A road scanfier comprising a wheeled In witness whereof, I have hereunto set truck, a bar running transversely under the my hand this 26 day of August, 1912 5 truck, a frame connected to the bar, separate devices connect d to the bar at opposite DAVID COOK sides of the conn ction of the frame to said Witnesses: bar for tilting the bar and thereby the EUGENE A. THOMPSON, -frame,;teeth secured to the frame, and an Eva E. Gnnnnnm,

10 additional device connected to the forward HOWARD P. DENISON. 

